Emily Parker, an eighteen-year-old human raised by vampire Duke Robert, grows up believing that his three heirs—Ryan, Daniel, and Jack—will honor the childhood vow to protect her. Instead, they humiliate her for a low-born maid named Ashley and even violate the Blood Autonomy Act by cutting Emily's wrist and forcing her divine blood to heal Ashley's staged injury. When three destined blood bonds awaken at Emily's birthday banquet, she rejects all three heirs in public and announces her engagement to James Bennett, the vampire crown prince who respects her body, name, and freedom. Only after Emily blocks every message and leaves the Blackthorn estate do the heirs realize they have truly lost her. Meanwhile, Ashley's secret deal with a gray-robed cleric exposes the murder of Emily's parents, the truth of her Morning Divine Blood, and the eclipse curse controlling the royal family. At the wedding, the mastermind attacks Emily with a holy-silver blade. Jack, the brother who once hurt her most, dies protecting her and finally fulfills the childhood vow. One month later, Emily refuses to excuse the past, yet chooses a marriage founded on consent, equality, and freedom.
